With this expression, it is now possible to look for wormholes in the phase space \((\beta ,\theta ,\zeta )\) . Since \(\mu (\zeta )=\mu (-\zeta )\) , their trajectories are symmetric with respect to the plane \(\zeta =0\) . We choose to consider a dark energy with \(-1.5<w_0<-1,-0.5<w_1<0\)  and cosmological parameters \(H_0=70\) , \(\Omega _{m0}=0.27\)  in agreement with the observations[1]}, [2]}, [3]}. We get the figure REF . All the trajectories have their throat in \((\beta ,\theta ,\zeta )=(0,1,0)\)  and end in \((\beta ,\theta ,\zeta )=(0,-1,0)\)  with diverging \(l\)  and density. Hence, they do not have any singularity and are not asymptotically Minkowski flat.
